$\lim_{x\to0}\left(\frac{\left(e^x-sinx-1\right)}{x^4+7x^3+10x^2}\right)$
$\int3cos^5xdx$
$m^2-11m+12$
$sin^4x-sin^2x$
$\left(x^3+12\right)\left(x^3+5\right)$
$\frac{5x-4}{-5}$
$\left(2^{-2}\right)^{-1}$
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